Adds enableVirtualTime and setVirtualTimePolicy To Emulation domain.

third_party/WebKit/public/platform/WebViewScheduler.h

Index: third_party/WebKit/public/platform/WebViewScheduler.h
diff --git a/third_party/WebKit/public/platform/WebViewScheduler.h b/third_party/WebKit/public/platform/WebViewScheduler.h
index 3635b784a04c751614fee6653e7850d56ea7553a..81999121b80441723c58a890933902b76dc04be6 100644
--- a/third_party/WebKit/public/platform/WebViewScheduler.h
+++ b/third_party/WebKit/public/platform/WebViewScheduler.h
@@ -16,7 +16,8 @@ class WebFrameScheduler;
 
 class BLINK_PLATFORM_EXPORT WebViewScheduler {
 public:
-    virtual ~WebViewScheduler() { }
+    WebViewScheduler();
+    virtual ~WebViewScheduler();
 
     // The scheduler may throttle tasks associated with background pages.
     virtual void setPageVisible(bool) = 0;
@@ -44,6 +45,24 @@ public:
     // fast forward so that the system doesn't actually sleep for the delays between
     // tasks before executing them.
     virtual void setAllowVirtualTimeToAdvance(bool) = 0;
+
+    // Returns true if virtual time is allowed to advance.
+    virtual bool virtualTimeAllowedToAdvance() const = 0;
+
+    void incrementPendingResourceLoadCount();

[Sami, 2016/07/01 14:46:30]

Could you add these on the WebFrameScheduler instead? Internally they could just
call into WebViewSchedulerImpl, but it feels like keeping the frame association
might be useful.

[alex clarke (OOO till 29th), 2016/07/01 15:53:23]

Done.

+    void decrementPendingResourceLoadCount();
+
+    enum class VirtualTimePolicy {
+        ADVANCE,
+        PAUSE,
+        PAUSE_IF_NETWORK_FETCHES_PENDING
+    };
+
+    void setVirtualTimePolicy(VirtualTimePolicy);
+
+private:
+    int m_pendingResourceLoadCount;
+    VirtualTimePolicy m_virtualTimePolicy;
 };
 
 } // namespace blink